Golf ball
AssigneeBridgestone Sports Co., Ltd.
InventorsHiroshi Higuchi, Atsushi Nanba
Life of this patent
Estimating the term…
Abstract
A golf ball includes, as a composing element, a hot-molded product obtained from a rubber composition which includes a main rubber containing 10 to 90 mass % of a polybutadiene, an unsaturated carboxylic acid and/or a metal salt thereof, and an organic peroxide. The polybutadiene has 60% or more of cis-1,4-bonds. Further, letting a Mooney viscosity (ML1+4(100° C.)) of the polybutadiene be ML and a viscosity of a toluene solution containing 5 mass % of the polybutadiene at 25° C. be η(mPa·s), ML and η satisfy a relationship of η≧20×ML−600.
Claims6
A golf ball including, as a composing element, a hot-molded product obtained from a rubber composition, said rubber composition comprising:
- a main rubber containing 10 to 90 mass % of a polybutadiene (a);
- an unsaturated carboxylic acid and/or a metal salt thereof;
- and
- an organic peroxide;
- wherein said polybutadiene has 60% or more of cis-1,4-bonds;
- and
- letting a Mooney viscosity (ML1+4(100° C.)) of said polybutadiene be ML and a viscosity of a toluene solution containing 5 mass % of said polybutadiene at 25° C. be η(mPa·s), ML and η satisfy a relationship of η≧20×ML−600,
- wherein said golf ball is either a one-piece golf ball or a golf ball including a solid core;
- and
- wherein said golf ball is a non-wound solid golf ball.
Dependencies are inferred from the claim text.